TUTORIAL Introduction to Piezoelectric Sensors

Bias Voltage Levels in

Bias Voltage Levels in Typical IEPESystemsDytran Instruments, Inc.30

IEPE Sensor Frequency Response• Low frequency response is controlled by the sensorDischarge Time Constant (DTC)‒ Factory set and cannot be changed‒ Can be changed at time of manufacture• High frequency response is generally a function ofsensor resonance (natural) frequency• Filtering in the sensor or signal conditioning can alsoeffect the sensor frequency response• High sensitivity sensors generally have lowresonance frequency• Low sensitivity sensors generally have highresonance frequencyDytran Instruments, Inc.31